From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f47.google.com (mail-wr1-f47.google.com [209.85.221.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B770E396D3D for ; Mon, 23 Mar 2026 14:44:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774277071; cv=none; b=eh6WGuiSUIso2gY4PQopnaaWJ8l2L3cn5ba4UtErM/iEG/m1f7o6NwtpoWZoG/IQm98mvhwrSkNIJtW54F7UASK0wtlhoML98R6pcEwU7VZmd+IvnxxmBetnKrFAmOTMQk2B5rnDUJIV7TeOjamlG+ibv1BbOKkKPJiWOD7FQf0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774277071; c=relaxed/simple; bh=Sz8BjVHNR/2cFKMwkkMdh6g+P4C3BczN2D44AA+h7X4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=HlCgJ8SsdD2mqHUuJAz76qF5dIBsTpFsjcJeVNVR4ZRMfjkGqIFi1BzME764Url0JyRF9xDCo3l0NDo/ptuesB0ayqcOJl8pXB8sJ2a+ciw1SP2TVRhF8xTHifE/cYSDgAFWgvO+3FRqP4qtYyB/des0/lamoD7fIvYka0fRu1Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b=a8KQOH0p; arc=none smtp.client-ip=209.85.221.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b="a8KQOH0p" Received: by mail-wr1-f47.google.com with SMTP id ffacd0b85a97d-439b9b1900bso2072139f8f.1 for ; Mon, 23 Mar 2026 07:44:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1774277067; x=1774881867; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :from:references:cc:to:subject:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to; bh=Apeh08iQfW1zl1kubqYMTfp/o+HNBm1KzQrtiUj8S3o=; b=a8KQOH0pAiA+ZM2rly7YnfrDD2YqKsHDVUBb2o1l44+QTfjmWE6o4ws2LBQYAKyg/A +eCm2okHqUbQwMj5chUBGiBTgtm3Ya5EyVje19T/qC6taiNJXvdxIE4NrprbnMA4STy9 ip5yGuHO1Buo1i8ncJKVrf0auBAfCz4cLaKq9v8lUFOo9YKogshshzYfksooJcaPacxX KxdBaI4VsVTasjEOc4O7XRzwD5shgDauAApetKvFkq5o+vj1ZHQhYPoMh72D1M+z5Fl2 Stelny+pssN3keGJj7mTnZuVzbvYIP4xCItPgj3St3vgAxqzdKvSUcqIU0eREBTGHdxv yI+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774277067; x=1774881867; h=content-transfer-encoding:in-reply-to:autocrypt:content-language :from:references:cc:to:subject:user-agent:mime-version:date :message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=Apeh08iQfW1zl1kubqYMTfp/o+HNBm1KzQrtiUj8S3o=; b=HU4EStt3SAwsdXzZNuQU5zHUDFpeZ8H4Lqi8loDteqX+096u8065rYimOBuowELnJM rli0G4VhCW3URdboxHBsmH29Uo3rigx8dSi4bTl5HeFT61BJMvbXhBJEf9MLHisH22yv QZo2lpRiKQAd+SxpU2H+KeNEL4P8utW/0ZVnukge6PeWxCbfwmNWIy8VIPPV6Y6sB3La IxcyUQeAbmU9cWxxmqQq3J1t2rrQBOzsJiz0hG9I2DpCZqE1gBEUE18hx3ELunEic+0m M07qjMfnJxAB0DcRS7Kas5BNDJkU+wLYE5UyHZNZaS17BJY9GfvemABe4WDvvuXAQ9Ag YGdg== X-Forwarded-Encrypted: i=1; AJvYcCWMkb5x6K9Y2Kjm/4vhdS0Xep0MmmqjI8WDA1nMaQC/qB/oA6U/Ch9UFML+yUsRG6h8j0g/R+g=@vger.kernel.org X-Gm-Message-State: AOJu0YzQPfaFiZz585/SFaiLW9WURF6XIfxkcUAQp+4qlqiUOMjHke+a MyKSvA+uof2HXy709hVZzcvzEg9fbqhoWucQogblOagg1l2U3mWfi5pzjolstKKAdrk= X-Gm-Gg: ATEYQzyM0dek672d1LvYCyWGdjQCM7cq5yVnjcVuTR9LAMDc5lGPu/mWEPhUHKp9B1V FKGDZpHTF2bBgouRTaX7Q+pFrJ8FpIBcXUXHlfDlOS0hj/6LYQ/mPpod3003xXlC+dHNB5Z6bsb kiAse9u4otIwip7FVzM4uG88kzLaE9oy6tkN+332ywXLJeTsd/BbMG2QfUF7DsY9IwuN/9wKgPY b/7El8djZDxUnrL/iPoJ9ul9bxDrpPO3WfciObg7mxY6LVv+yw/zuOMC90nkxEvqRaXvz8gvVd0 LKy42PQ3okNuI/262a7T1Ds73+hys+zOS4XPYbwQCemmoAO6TFlAgKmOMRPkA5mABdiRTpflig2 mY+fl6/YGrQlCzwXjwt7wNet553gHxhKFXKZnNq0Z51m19rUA7TBqHyG4Dan6CFBSE00izM0oen mBylAsS4jUzCD4xiHVmgALMZjSeg== X-Received: by 2002:a05:6000:4381:b0:439:afd8:621c with SMTP id ffacd0b85a97d-43b6428b417mr17458154f8f.55.1774277067029; Mon, 23 Mar 2026 07:44:27 -0700 (PDT) Received: from [192.168.0.20] ([212.21.133.10]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43b644bd0dcsm29028576f8f.11.2026.03.23.07.44.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 23 Mar 2026 07:44:26 -0700 (PDT) Message-ID: <6c315cb3-b3a0-478e-b8ec-36d82684d310@suse.com> Date: Mon, 23 Mar 2026 16:44:24 +0200 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 03/10] x86/bhi: Rename clear_bhb_loop() to clear_bhb_loop_nofence() To: Pawan Gupta , x86@kernel.org, "H. Peter Anvin" , Josh Poimboeuf , David Kaplan , Sean Christopherson , Borislav Petkov , Dave Hansen , Peter Zijlstra , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , KP Singh , Jiri Olsa , "David S. Miller" , David Laight , Andy Lutomirski , Thomas Gleixner , Ingo Molnar , David Ahern , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , Stanislav Fomichev , Hao Luo , Paolo Bonzini , Jonathan Corbet Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Asit Mallick , Tao Zhang , bpf@vger.kernel.org, netdev@vger.kernel.org, linux-doc@vger.kernel.org References: <20260319-vmscape-bhb-v7-0-b76a777a98af@linux.intel.com> <20260319-vmscape-bhb-v7-3-b76a777a98af@linux.intel.com> From: Nikolay Borisov Content-Language: en-US Autocrypt: addr=nik.borisov@suse.com; keydata= xsFNBGcrpvIBEAD5cAR5+qu30GnmPrK9veWX5RVzzbgtkk9C/EESHy9Yz0+HWgCVRoNyRQsZ 7DW7vE1KhioDLXjDmeu8/0A8u5nFMqv6d1Gt1lb7XzSAYw7uSWXLPEjFBtz9+fBJJLgbYU7G OpTKy6gRr6GaItZze+r04PGWjeyVUuHZuncTO7B2huxcwIk9tFtRX21gVSOOC96HcxSVVA7X N/LLM2EOL7kg4/yDWEhAdLQDChswhmdpHkp5g6ytj9TM8bNlq9I41hl/3cBEeAkxtb/eS5YR 88LBb/2FkcGnhxkGJPNB+4Siku7K8Mk2Y6elnkOctJcDvk29DajYbQnnW4nhfelZuLNupb1O M0912EvzOVI0dIVgR+xtosp66bYTOpX4Xb0fylED9kYGiuEAeoQZaDQ2eICDcHPiaLzh+6cc pkVTB0sXkWHUsPamtPum6/PgWLE9vGI5s+FaqBaqBYDKyvtJfLK4BdZng0Uc3ijycPs3bpbQ bOnK9LD8TYmYaeTenoNILQ7Ut54CCEXkP446skUMKrEo/HabvkykyWqWiIE/UlAYAx9+Ckho TT1d2QsmsAiYYWwjU8igXBecIbC0uRtF/cTfelNGrQwbICUT6kJjcOTpQDaVyIgRSlUMrlNZ XPVEQ6Zq3/aENA8ObhFxE5PLJPizJH6SC89BMKF3zg6SKx0qzQARAQABzSZOaWtvbGF5IEJv cmlzb3YgPG5pay5ib3Jpc292QHN1c2UuY29tPsLBkQQTAQoAOxYhBDuWB8EJLBUZCPjT3SRn XZEnyhfsBQJnK6byAhsDBQsJCAcCAiICBhUKCQgLAgQWAgMBAh4HAheAAAoJECRnXZEnyhfs XbIQAJxuUnelGdXbSbtovBNm+HF3LtT0XnZ0+DoR0DemUGuA1bZAlaOXGr5mvVbTgaoGUQIJ 3Ejx3UBEG7ZSJcfJobB34w1qHEDO0pN9orGIFT9Bic3lqhawD2r85QMcWwjsZH5FhyRx7P2o DTuUClLMO95GuHYQngBF2rHHl8QMJPVKsR18w4IWAhALpEApxa3luyV7pAAqKllfCNt7tmed uKmclf/Sz6qoP75CvEtRbfAOqYgG1Uk9A62C51iAPe35neMre3WGLsdgyMj4/15jPYi+tOUX Tc7AAWgc95LXyPJo8069MOU73htZmgH4OYy+S7f+ArXD7h8lTLT1niff2bCPi6eiAQq6b5CJ Ka4/27IiZo8tm1XjLYmoBmaCovqx5y5Xt2koibIWG3ZGD2I+qRwZ0UohKRH6kKVHGcrmCv0J YO8yIprxgoYmA7gq21BpTqw3D4+8xujn/6LgndLKmGESM1FuY3ymXgj5983eqaxicKpT9iq8 /a1j31tms4azR7+6Dt8H4SagfN6VbJ0luPzobrrNFxUgpjR4ZyQQ++G7oSRdwjfIh1wuCF6/ mDUNcb6/kA0JS9otiC3omfht47yQnvod+MxFk1lTNUu3hePJUwg1vT1te3vO5oln8lkUo9BU knlYpQ7QA2rDEKs+YWqUstr4pDtHzwQ6mo0rqP+zzsFNBGcrpvIBEADGYTFkNVttZkt6e7yA LNkv3Q39zQCt8qe7qkPdlj3CqygVXfw+h7GlcT9fuc4kd7YxFys4/Wd9icj9ZatGMwffONmi LnUotIq2N7+xvc4Xu76wv+QJpiuGEfCDB+VdZOmOzUPlmMkcJc/EDSH4qGogIYRu72uweKEq VfBI43PZIGpGJ7TjS3THX5WVI2YNSmuwqxnQF/iVqDtD2N72ObkBwIf9GnrOgxEyJ/SQq2R0 g7hd6IYk7SOKt1a8ZGCN6hXXKzmM6gHRC8fyWeTqJcK4BKSdX8PzEuYmAJjSfx4w6DoxdK5/ 9sVrNzaVgDHS0ThH/5kNkZ65KNR7K2nk45LT5Crjbg7w5/kKDY6/XiXDx7v/BOR/a+Ryo+lM MffN3XSnAex8cmIhNINl5Z8CAvDLUtItLcbDOv7hdXt6DSyb65CdyY8JwOt6CWno1tdjyDEG 5ANwVPYY878IFkOJLRTJuUd5ltybaSWjKIwjYJfIXuoyzE7OL63856MC/Os8PcLfY7vYY2LB cvKH1qOcs+an86DWX17+dkcKD/YLrpzwvRMur5+kTgVfXcC0TAl39N4YtaCKM/3ugAaVS1Mw MrbyGnGqVMqlCpjnpYREzapSk8XxbO2kYRsZQd8J9ei98OSqgPf8xM7NCULd/xaZLJUydql1 JdSREId2C15jut21aQARAQABwsF2BBgBCgAgFiEEO5YHwQksFRkI+NPdJGddkSfKF+wFAmcr pvICGwwACgkQJGddkSfKF+xuuxAA4F9iQc61wvAOAidktv4Rztn4QKy8TAyGN3M8zYf/A5Zx VcGgX4J4MhRUoPQNrzmVlrrtE2KILHxQZx5eQyPgixPXri42oG5ePEXZoLU5GFRYSPjjTYmP ypyTPN7uoWLfw4TxJqWCGRLsjnkwvyN3R4161Dty4Uhzqp1IkNhl3ifTDYEvbnmHaNvlvvna 7+9jjEBDEFYDMuO/CA8UtoVQXjy5gtOhZZkEsptfwQYc+E9U99yxGofDul7xH41VdXGpIhUj 4wjd3IbgaCiHxxj/M9eM99ybu5asvHyMo3EFPkyWxZsBlUN/riFXGspG4sT0cwOUhG2ZnExv XXhOGKs/y3VGhjZeCDWZ+0ZQHPCL3HUebLxW49wwLxvXU6sLNfYnTJxdqn58Aq4sBXW5Un0Q vfbd9VFV/bKFfvUscYk2UKPi9vgn1hY38IfmsnoS8b0uwDq75IBvup9pYFyNyPf5SutxhFfP JDjakbdjBoYDWVoaPbp5KAQ2VQRiR54lir/inyqGX+dwzPX/F4OHfB5RTiAFLJliCxniKFsM d8eHe88jWjm6/ilx4IlLl9/MdVUGjLpBi18X7ejLz3U2quYD8DBAGzCjy49wJ4Di4qQjblb2 pTXoEyM2L6E604NbDu0VDvHg7EXh1WwmijEu28c/hEB6DwtzslLpBSsJV0s1/jE= In-Reply-To: <20260319-vmscape-bhb-v7-3-b76a777a98af@linux.intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 19.03.26 г. 17:40 ч., Pawan Gupta wrote: > To reflect the recent change that moved LFENCE to the caller side. > > Suggested-by: Borislav Petkov > Signed-off-by: Pawan Gupta Nit: I think having the _nofence in the function name is leaking an implementation detail into the name/interface. I.e things change and we decide that the implementation of a particular function must change so we just do the change and substantiate it in the commit message or in a comment. Especially that we don't have a "with an lfence" version. What's more I'd consider this a "private" function, that's called via the CLEAR_BRANCH_HISTORY macros, the only place it's called directly is in the bpf jit code, but that's more of an exception. Still, Reviewed-by: Nikolay Borisov